Lab 9 Kassidy Schanzlin

Laser light with wavelength of 500 nm is incident on two slits of width 1.0 µm and the slits are 8.0 µm apart. a) Determine how many bright fringes are within the central maximum of the diffraction pattern. b) Determine how many bright fringes are within the first side peak of the diffraction pattern. c) Draw the diffraction pattern.

Question Three Two aluminium samples, A and B, are to be examined using Bragg reflection. For sample A the first-order Bragg reflection from (111) planes occurs at an angle of 25°00', while for sample B the first order Bragg reflection from (111) planes was at 25°20'. Aluminium atoms are 1.8 x 10-10 m diameter and form an FCC structure. X-radiation of wavelength 1.52 x 10-10 m is used for the analysis of two samples of aluminium. Answer the following questions: (i) Calculate the lattice parameter of an aluminium atom. (ii) Calculate the interplanar distances for the two samples. (ii) Which sample shows pure aluminium, and what is the reason for the difference? (iv) Mention four uses of pure aluminium.

Lasers and Diffraction Gratings: If you had a grating that contained fewer lines per meter than another, what differences would you expect? Explain.

If the width of the slit is increased in a single slit diffraction experiment, the light intensity pattern becomes laser will be Given a constant slit width, the light intensity pattern from a 700 nm than the pattern from a 400 nm laser. Select one: SMIV IMIIW b. narrower, wider c. wider, narrower d. narrower, narrower e. wider, wider

1. Suppose you pass light from a Laser through two slits separated by 4.16 um and found that the second bright line on a screen is formed at an angle of 13 deg relative to the incident beam. a. What is the wavelength of the light? b. What is the enegy gap in eV c. What is the highest-order constructive interference possible with the system?

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It has been suggested that solar powered space ships could get a boost from a laser either on Earth or in orbit around Earth. The laser would have to be very powerful to give any measurable benefit to the ship. If the laser produces a 0.1-m diameter beam of 446-nm light, what is the minimum angular spread of the beam? rad Additional Materials

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Required information A laser has a wavelength of 530 nm. A grating and a lens are used to split the beam into three parallel beams spaced 1.85 cm apart. What is the maximal value of the slit spacing so that the grating produces three and only three beams? µm

Phys- ics BUY College Physics 1st Edition ISBN: 9781938168000 Author: Paul Peter Urone, Roger Hinrichs Publisher: OpenStax College Question 2. A thin film is deposited on substrate (n=4) to eliminate the reflection at 1500 nm wavelength at normal incidence. Determine the film refractive index and minimum thickness. Chapte... Section... Problem 31PE: Structures on ... Transcribed Image Text: 2. A thin film is deposited on substrate (n=4) to eliminate the reflection at 1500 nm wavelength at normal incidence. Determine the film refractive index and minimum thickness. See similar textbooks SAVE

Question A9 A laser with 589 nm wavelength and a beam diameter of 2 mm is fed through a beam-expander, then aimed from the G.O. Jones building to the Canary Wharf tower at a distance of 2.75 km. What expansion factor is required for the beam-expander in order that the diffraction-limited spot at Canary Wharf tower has a diameter of 30 cm (defined as the diameter of the first dark ring) ?